AcrAB-TolC is a major efflux pump in Escherichia coli. It was reported that tolC is overexpressed and involves in improving the organic solvent tolerance level in Escherichia coli marR mutants that are resistant to several antibiotics, such as ciprofloxacin. Low and intermediate levels resistance did not improve organic solvent tolerance. Thus, in this descriptive-experimental study it was deci...

It has been reported that morphine tolerance does not develop in the presence of chronic pain. Therefore, this study was conducted to find out whether chronic inflammatory pain is able to eliminate or attenuate the developed tolerance to analgesic effect of morphine and also to investigate the role of lumbar spinal cord as a candidate site for this interaction. Tolerance was induced in adult ma...

maize improvement for high temperature tolerance requires the reliable assessment of parental inbred lines and their combinations. fifteen maize inbred lines were evaluated during 2007 and 2008 in shushtar city (khuzestan province). the inbred lines were planted at two dates: 6 july, to coincide heat stress with pollination time; and 27 july, as normal planting to avoid high temperature during ...

objective: salt stress is a world-wide problem and soil salinity is common in arid and semi-arid regions. this study was undertaken to investigate salt tolerance in salsola orientalis in laboratory and natural conditions and recognize the mechanisms that allow it to tolerate these conditions. methods: this study had two parts of greenhouse and natural habitats. the treatment solutions for salin...

background: despite the positive outcomes reported with cardiac rehabilitation (cr), its impacts have been reported to be different from a region or country to another, which may be due to the different contents of rehabilitation programs. objectives: to investigate the effect of cr on cardiovascular risk factors. patients and methods: this is a retrospective cohort study on the data from imam ...

objective: most   neonates admitted to neonatal wards do not tolerate sufficient milk.  recently the effect of erythromycin on increasing feeding tolerance in neonates has been studied. in this study the effectiveness of oral, high dose erythromycin a prokinetic agent was used to enhance feeding tolerance in these neonates.  methods: this prospective randomized controlled clinical trial was con...

objective: the current study aimed at investigating the role of patience and its components in predicting self-control among high school students in shiraz, iran. methods: the statistical population of the study included all high school students of shiraz. three hundred and thirty-two students (161 females and 171 males) were recruited via cluster sampling method. the subjects participated in t...

it has been shown that stress and chronic pain could prevent the development of tolerance to morphine analgesia, which appears to be related to the activation of hypothalamus–pitutitary–adrenal (hpa) axis, activation of neuroendocrine systems and changes in neurochemical levels. moreover, the involvement of nitric oxide (no) in the development of tolerance to morphine analgesia has been implica...